Shuttle-spindle pivot



April 29, 1930. F. ROBINSON SHUTTLE SPINDLE PIVOT Filed Feb. 9. 1929 In ve n for A/V/Q//v/po//VJOM Patented Apr. 29, 1930 FRANKLIN ROBINSON, or Y PETERSON, NEW J'RSY SHUTTLE-SPINDLE PIVOT yApplication led February 9,

This invention relates generally to shuttles for looms and has particular reference to a shuttle spindle pivot and aims to provide a pivot that can be rigidly associated with the shuttle body so as not to work out of place, and consequently injure the looin reed or do other damage. Furthermore, the construction is such as to enable the pin to be removed from the body in the event it or the butt of the spindle becomes unduly worn. In addition to this, means is provided to enable the pin to continuously emit a sufficient amount of lubricant to the spindle butt, so that the same may be freely swung into or out of the shuttle spindle cavity, and this without requiring any unusual effort' on the part of the operator.

A final and important object of this invention is the provision of a shuttle spindle pivot that is of simple and inexpensive construction, and that will not require such changes in the shuttle body or spindle structure as to impair the efiicient operation of the shuttle.

In the drawing wherein like vreference characters indicate corresponding parts in both of the views:

Figure 1 is a fragmentary view oi' a loom shuttle partially in longitudinal section and being equipped with my improved spindle pivot, and

Figure 2 is a detailed longitudinal section of the pivot, per se.

NOW having particular reference to the drawing, A designates a generally conventional shuttle body having the usual cavity B Jfor the quill or cop tube, one end of this cavity being formed with the usual longitudinal extension C for the reception of the butt end D of the spindle E for receiving the quill or cop tube. This shuttle is also equipped with the other usual structural elements generally illustrated, and inasmuch as they are well known, a description thereof is not believed here necessary. In carrying out my invention, the said shuttle body A at the usual point between the ends of the cavity extension C is jformed with a transverse bore 5 that registers with the usuall opening in the spindle butt, as Well as the usual openings 'thereof having the unthreaded-couiitersiiik Ahere er the pivot 9 ,a suitable wick-orland- 1929. Serial 'Nm-338,766. A@

of4 the `usual metal :clips F, whichA Hank the sidesf the 'buttend of the spindle as' disclosed, Y

Adjacent @ne outer end of this leere y5,-the same is of enlarged area and threaded as 'at 6, -while' 'at vthis extreme end, the bore is 'formed with a further enlarged munter-sink l. The extremevopposite end of thisfbor 5 Visfforme'd to 'provide a relatively'wide threaded counterssinh` 8, the diameter o' which is similar to the-diameter of discounter-sinh '7 at the opposite end @furthe bore My pvet consistsof ah'ollow pin 9 having an unth'r'eaded rrfiunded head 1() at1 one end, which is formed with a screw driver slot`11,-'thispin e 'Q iiniediately inwardly of said head being of enlarged'diameter and screw threaded as at 12. Obviously, the pin 9 is adapted to be engaged y' within the bore through the VV'endv u and ass'oon as the enlarged threaded area 12 of the pivot reaches the enlarged threaded portion. 6 ofthebore,the said pivot is screwed ihwardlyuntll `the outer surface vof the head 1Q is hush with or slightly inwardly of the Aa'dj'ac'ent sidesurface of the shuttle body.

The opposite end of the pvot 9 is open and formed 'with iifltcilial screw threads 13, and aft-enh@ pvot has beeirarraiiged within the here, a threaded plug 14 is screwed into nthe open end of vthe pivot bore asjillustrated in 'Figure' 2. Thisfplug 14 `is formed with a threaded head 15 *of the 'saine diameterasthe unthreaded headlO for threaded engagement within the threaded waiter-sink's of the adi 5 jacentend of they bore 5 and obviously, the provisin of the avohreaded jointsstuns end of the pivot aswell as the threaded joint between/the oppesiteend'of thepiwiotand'the Shuttle, burly will substantially' overcome any' Y liability if the pvot l becoming A10o-se within the shuttle here.

There -is preferablyarraiged 'within,the` i pjntjht" mediate itseiids, pivot; Y i l bricant chamber to permit the lubricant to flow through the piv-ot, thus maintaining thev Vjoint between the spindle and pivot in lubricated condition to enable the free swinging of the spindle without unusual-effort. If desired, a suitable washer 18 may be provided between the end of the pivot 9 and the plug head-I5, as illustrated inl Figure t 2. Y

In viewA of the foregoing description when 'considered in conjunction with the accompanying drawing, itwill be apparent that I have provided a novel, sim le and useful pivot for the quill or cop tu e spindles of 4afiecting the loom shuttles, and even though I havevherein shown and described theinvention as con sisting of certain detailedstructural eleing provided with a threaded enlargement, ,Y

tween its ends aIi-d registering with the lubricant chamber of the pin.

In testimony whereof I aiix iny signature.

FRANKLIN ROBINSON.

ments, it is nevertheless to .be understood that i Y some changesma-y be made therein without spirit and scope of the appended claims'.l Y

Having thus described my invention, what I claim as new, and/desire to secure by Letters-Patent, is:

A l. In combination, ashuttle body havingv a fcavityfor the quill or cop tube ormedwith .an extension, the pai-tof the body containing .said extension having a bore penetrating said Vbody and traversing said extension trans'- versely thereof, an-d formedV at its opposite vends with counter-sinks, the counter-'sink at d one end being threaded andtheV counter-sink n at the opposite end being un'threa-ded, said bore ydirectly inwardly of the unthreaded counter-sink being of a diametersubstantially intermediate that of the diameter of the bore an-d said Y counter-sink, and being screw threaded, a pivoted spindle having its butt in the extension, a pivot adapted to lbe disposed within saidbore and through the usual opening of the spindle butt, .said pivot having an unthreadedhead upon one end for'eng'agement within the unthread-ed counter-sinlr'of the bore, an enlargement formed directly inof'said'pivot being'provided with a threaded screwed into the socket after the pivot has been arranged within the bore, said pin being i forn'ied at its outer'end Vwith a threaded head f for threaded engagement within the threaded couiiter-sinlzlof th-e bore. i

2;' In a shuttle spindle pivot, a pivot pin, an

unthreaded head upon onev-` end of said pin, Y saidpin directly inwardly of the head being Y provided with a l'threaded enlargement, the

` -e 3. Ina Vshuttle,spindle pivot, a pivot; pin, i

opposite end of said pin being formed with a threaded socket, a threaded. plug adapted for threadedengagement within the socket, and a threaded headiupon the outer end of said plug..

aniinthreaded hea-d upon one end of said pin,

saidpi-n directly inwardly ofthe head beg i 'Y waidly of said hea-d Vand being threaded for i threaded engagement within the threaded enlarged'portion ofsaid bore, the opposite end socketand `a threaded plug a-dapted to be e 

